//@COPYRIGHT@//
//
// Copyright (c) 2012, Tomoto S. Washio
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//   * Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
//   * Neither the name of the Tomoto S. Washio nor the names of his
//     contributors may be used to endorse or promote products derived from
//     this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL TOMOTO S. WASHIO BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//@COPYRIGHT@//

#pragma once
#include "base.h"
#include <string>
#include <algorithm>

#define CONNECTION_INFO_PREFIX "\\\\?\\"

class ConnectionInfoUtil {
public:
	static std::string encodeConnectionInfo(const char* id)
	{
		std::string result(id);
		std::transform(result.begin(), result.end(), result.begin(), encodeFunc);
		return CONNECTION_INFO_PREFIX + result;
	}

	static std::string decodeConnectionInfo(const char* connectionInfo)
	{
		if (strncmp(connectionInfo, CONNECTION_INFO_PREFIX, strlen(CONNECTION_INFO_PREFIX)) == 0) {
			std::string result(connectionInfo + strlen(CONNECTION_INFO_PREFIX));
			std::transform(result.begin(), result.end(), result.begin(), decodeFunc);
			return result;
		} else {
			return connectionInfo; // malformed?
		}
	}

private:
	static int encodeFunc(int c) {
		return (c == '\\') ? '#' : tolower(c);
	}

	static int decodeFunc(int c) {
		return (c == '#') ? '\\' : toupper(c);
	}
};

